The very first sewerage system for Pune city was designed in 1928. The collected sewage was given preliminary treatment such as screening and grit removal at Bhairoba Nala and it was used for irrigation purpose by pumping 17.5 Nalli canal area. This system was designed for 31.8 MLD to cater to the ultimate design capacity for population of 0.26 million in the year 1951.

In the year 1981, a complete collection and disposal system was planned taking into account the adjoining areas where population was expected to increase. A 90 MLD Sewage Treatment Plant was constructed at Dr. Naidu I.D. Hospital. The treated sewage is let off into the Mula-Mutha river. There is an intermediate pumping station at Kasba Peth of 90 MLD capactity from where sewage is pumped into the sewage treatment plant at Dr. Naidu Hospital.

Up to the year 1997 the total main sewer length in all of the zones was approximately 146.83 km, in old Pune city limit. Dr. Naidu Sewage Treatment Plant with full-fledged primary and secondary sewage treatment facility, was treating 90 MLD sewage and Bhairoba Nala sewage treatment plant with primary sewage treatment facility was treating 32 MLD sewage.

Considering the increase in the area under the jurisdiction of PMC (430 sq.km) and a rapid rise in population, the project plan for water supply and sewerage services was revised and completed in the year 2005.

PMC has constructed 4 new sewage treatment plants (STPs) along with the STP at Naidu Hospital at Koregaon Park (Bhairoba Nala), Erandwane, Tanajiwadi and Bopodi. The total 451 MLD of sewage is generated in PMC limit, out of that 305 MLD (i.e. 68%) is treated by the 5 STPs and the treated effluent is discharged into Mula Mutha rivers. For the treatment of the remaining 146 MLD sewage generated, 2 more STPs are proposed: one in the premises of the existing Naidu STP (115 MLD) and another at Vitthalwadi near Rajaram Bridge (32 MLD). Work on these two plants is in progress.